Water-heater.



H. SJHUMPHREY.

WATER HEATER.

APPLICATION FILED FEB. 20, 1913.

Patented Jan. 18, 1916.

TED STATES PA ENT OFFICE.

HERBERT S. HUMPHREY, OF KALAMAZOO, MICHIGAN.

warm-Baum Specification of Letters Patent.

Patented Jan. 18, 1916.-

Application filed February 20, 1913. Serial No. 749,682..

taken looking in the direction of the little arrows at the ends of the section lines.

I have not, in the accompanying drawing, attempted to maintain the proper relative proportions of. the parts, particularly in Figs. I and V which are to a conventional degree conventionalized.

In Fig. I, I illustrate my improvements embodied in a structure having a circulation system including the tank or reservoir 1, the heater 2 and the circulation pipes proved water heater having a plurality ofheater units with independent burners and valves which are thermostatically controlled so that one or more burners are supplied with gas or all may be cut off. Second, to provide an improved water heater having a plurality of burners in which the burners are independently controlled by thermostatic means. Third, to provide an improved controlled by thermostatic means." Fourth,

3, 4, 5 and 6.

The pipe 3 leads to the tank'- 1 from the heater, while the pipe -1 is the house delivery pipe and the pipes 5 and 6, the return pipes. The return pipe 5 may be omitted where it is not desired that the water shall circulate through the house pipes, the tank or'reservoir 1 may be omitted ,if desired and the house delivery and return pipes connected directly to the .water heater in which the fuel is entirely header for the boiler units and to the feed or return pipe 6. The return pipe 6 connects to provide an improved water heater which is highly efficient and, at the same 'time,-,

economical in the matter of fuel consumpticn.

an improved fuel valve mechanism.

Further objects, and objects relating to structural details will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a detail side elevation of a structure embodying the features of my invention, parts being broken away to show structural details. F ig. II is a detail vertical section through the thermostat and valve mechanism, on a line corresponding to line 2-2 of Fig. I. Fig. III is a detail vertical section on a line corresponding to line 33 of Fig. II. Fig. IV is a horizontal section on a line corresponding to line 44 of F ig. III. Fig. V is a detail perspective view of one of the main coil units and burners.

In the drawings, similar reference characters refer to similar parts throughout the several views, and the sectional views are Fifth, to provide in a water heater to the tank andto the bottom of the coils. The water supply pipe? is connected to the 'pipe 6. The structure illustrated is provided with a plurality of heater coils or units 8 which" are connected through the leader 9 -to the pipe 3. The heater units are provided with burners 10 which are independently connected to the gas supply and independently controlled, as will be described. The thermostat 11 in the structure illustrated, is arranged in the .pipe 6 so that the incoming water acts thereon, and also the return 1 water as it circulates.

The gas valve casing 12 is provided with an inlet chamber 13 with which the supply pipe 14 connects through the port or inlet opening 15. The valve casing is provided with independent outlet chambers 16 independently connected with the inlet chamber 13. The outlet chambers are connected to the burners through the independent connections 17.

The delivery of the fuel from the chamber 13 to the outlet chambers 16 of the valve casing is controlled by the valves 18. The stems 19 of the valves 18 are arranged to project into the chamber 13. These valve stems are preferably threaded into the valves for longitudinal adjustment.

The caps 20 of the outlet chamber 16 are provided with guides 21 for the lower ends of thevalve stems. The valves are provided with wings 22 which also serve to guide the valves. The valves are returned to their seats or closed, by means of the springs 23 which are arranged in seats 24 in the caps 20. This construction is of advantage in that the valves are readily accessible and can be readily removed for any desired purpose.

The thermostat actuated plunger member 25 is arranged through suitable packing glands in the cap member 26 of the inlet chamber'13 so as to be suitably guided 'and supported. The member 25 is rod-like in form and provided with across head 27 v acts upon the lever 33 fulcrumed' at 34. The

lever 33 engages the actuating plunger member' 25 so that when the temperature falls below a predetermined point one of the valves is opened, and if it falls below I another predetermined point, the second valve is opened and as it rises above these points, the valves'close. I provide apilot 35, as will be readily understood.

By this arrangement of parts I am able to effectively control the valves without the namely,

employment of a water actuated member, as shown, for example, in Patent No. 890,057, issued to me June 9, 1908. The burners are independently controlled so that while the water is maintained at the desired temperature, only such fuel is consumed as is necessary for the purpose.

The supply of gas to trolled so that as it is turned on and off, a substantially uniform combustible mixture is maintained; that is, the proportions of air and fuel do not vary as in the case of one large valve controlling the burners as has been heretofofi the practice. This practically obviates back firing, and also'the deposit of carbon, both of which are features of great advantage in a structure of this character where automatic action is desired with a minimum amount of care.

I have illustrated and described my improvements in one of the forms in which I have embodied the same in practice,-

a structure having a plurality of heater units. It will be readily understood that my improvements are adapted for use in structures having a single heating coil or water unit provided with a plurality of burners.

' Thevalve structure is also capable of very considerable modification which I contemplate, and some of which I have made use of,

the burners is conto said boiler units,

as I believe the disclosure made will enable those skilled in the art to which this invention relates to embody the same as may be desirable. I desire, however, to be undersood as claiming my improvements specifically in the form illustrated, as well as broadly within the scope. of the appended claims.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent is e 1. A water heater comprising a of boiler coil units, a circulation system inplurality cluding said boiler units, a thermostat disposed in the return of said circulation system, a' source of .water supply connected to sald return so that the thermostat is acted .upon by the incoming water, burners for said boiler units, fuel valves having independent burner delivery connections, said valves being provided with independent stems, a thermostat actuated plunger member provided with a cross head adapted to successively engage said valve stems, and springs for independently closing said valves.

2. A water heater comprising a plurality of boiler coil units, a circulation system including said boiler units, a thermostat disposed in the said circulation system, burners for said boiler units, fuel valves having independent burner delivery connections, said valves being provided with independent stems, a thermostat actuated plunger member provided with a cross head adapted to successively engage said valve stems, and springs for independently closing said valves.

3. A water heater comprising a plurality of boiler coil units, a circulation system, a connection from said boiler units to said system, a return connection from said system to said boiler units, a thermostat disposed in said return connection, a source of water supply connected to said return connection in advance of the thermostat, burners for said boiler units, fuel valves having independent burner delivery cbnnections, and operating connections for said thermostat to said valves, whereby they are successively actuated.

4. A water-heater comprising a plurality of boiler coil units, a circulation. system, a connection from said boiler units to said system, a return connection from said system a thermostat, a heating burner for each of said boiler units, fuel valves having independent delivery connections to said burners, and operating connections for said thermostat to said valves, whereby they are successively actuated.

. 5. A water heater comprising a plurality of boiler units, a thermostat, a heating burner for each of said boiler units, a fuel valve for each of said burners, said valves being provided with independent adjustable stems, a thermostat actuated member adapted to successively engage said valve" stems successively opening said valves, and

springs for independently closing said valves.

thermostat actuated member adapted to successively engage said valve stems successively opening said valves, and springs for independently closing said valves.

'7. The combination of a Waterheater boiler, a thermostat, a plurality of heating burners for said boiler, a fuel valve casing having an inlet chamber and outlet chambers connected to the inlet chamber by independent valve ports, said outlet chambers being independently connected to the burners, valves provided with stems threaded for longitudinal adjustment and projecting into said inlet chamber, a thermostat actuated plunger member having a cross head there on, arranged in said outlet chamber and adapted to successively engage said valve stems as the plunger is actuated, whereby the valves are successively opened by the thermostat, independent return springs for said valves arranged in said outlet chambers, a removable cap for said inlet chamber through which the plunger member is arranged, and removable caps for said outlet chamber provided with guides for the valve stems and with seats for the springs.

8. The combination of a Water heater boiler, a thermostat, a plurality of heating burners for said boiler, a fuel valve casing having an inlet chamber and outlet chambers connected to the inlet chamber by independent valve ports, said outlet chambers being independently connected to the burners, valves provided With stems projecting into said inlet chamber, a thermostat actuated plunger member having a cross head thereon, arranged in said outlet chamber and adapted to successively engage said valve stems as the plunger is actuated, whereby the valves are successively opened by the thermostat, and independent returnsprings for said valves arranged in said outlet chambers.

9. The combination with a water heater boiler, of a thermostat, a plurality of heating burners for said boiler, a fuel valve casing having an inlet chamber and outlet chambers independently connected to said inlet chamber, a valve for each of said heating burners,said valves being provided with stems projecting into said inlet chamber, a

thermostat actuated plunger member arranged in said inlet chamber and adapted to engage said valve stems successively, and return springs for said plunger and valves.

10. A water heater comprising a plurality of boiler units, a circulation system including a header for said boiler units and a return connected to all of the units, a thermostat disposed in'the return of said circulation system, a source of water supply connected to said return so that the thermostat "is acted upon by the return and the incoming Water, independent burners for said boiler units, fuel valves having independent delivery connections to said burners, said valves being provided with independent stems, a thermostat actuated plunger member provided with a cross head disposed to successively engage said valve stems, and springs for independently closing said valves.

11. A water heater comprising a plurality of boiler units, a circulation system including a header for said boiler units and a return connected to all of the units, a thermostat disposed in the return of said circulation system, a source of water supply connected to said return so that the thermostat is acted upon by the return and the incoming water, independent burners forsaid boiler units, fuel valves having independent delivery connections to said burners, and springs for independently closing said valves.

12. A water heater comprising a plurality of boiler coil units, a delivery header for said coil units, a circulation system including said header and return connections to all of said boiler coil units, a thermostat, a heating burner for each of said heater units, fuel valves for said burners, a pilot valve, and operating connections for said thermostat to said valves whereby they are successively operated.

13. A Water heater comprising a plurality of boiler units, a thermostat, an independent heating'burner for each boiler unit, a pilot for said heating burners, a fuel valve for each of said burners, and operating connections for said. thermostat to said fuel valves whereby they are successively actuated by said thermostat, for the purpose specified.

14. The combination of a Water heater comprising a plurality of boiler units, a heating burner for each unit, fuel valves for said burners, a thermostat, and means for successively actuating said valves controlled by said thermostat.

15. In a water heater, the combination of a boiler, a plurality of independent boiler heating burners, a pilot for said heating burners, a fuel valve for each of said heatmg burners, a thermostat, and means for successively actuating said valves controlled by said thermostat.

16. Ina Water heater, the combination of a boiler comprising a plurality of boiler units, a heating burner for each boiler unit, a fuel valve for each heating burner, a thermostat, means for successively opening said valves actuated by said thermostat, and independent springs for closing said fuel valves.

17. In a Water heater, the combination of a boiler, a plurality of boilerrheating burners, fuel valves provided with stems, a thermostat actuated member adapted to engage a boiler, a plurality of boiler heating burnsaid thermostat actuated member and valves. 15

In Witness whereof, I have hereunto set my hand and seal in the presence of two Witnesses.

HERBERT s. HUMPHREY. I a] Witnesses: v

M. PHINA WOODRU'FF, PEARL E. LiLLm. 

